import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import Users from './components/user/Users.vue'
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'
import Cate from './components/goods/Cate.vue'

Vue.use(Router)

const router= new Router({
  routes: [
    {path:'/', redirect:'/login'},
    {path:'/login', component:Login},
    {path:'/home',component:Home,
    // 重定向
      redirect:'/welcome',
    children:[
      {path:'/welcome',component:Welcome},
      {path:'/users',component:Users},
      {path:'/rights',component:Rights},
      {path:'/roles',component:Roles},
      {path:'/categories',component:Cate}
    ]    
  },
 
  
  ]
})
//先挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  //to将要访问的路径
  //from代表从哪个路径跳转而来
  //next 是一个函数 表示放行
  // next() 放行 next('/login') 强制跳转 
  if(to.path==='/login') return next();
  //获取token
  const tokenStr= window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})
export default router;
